Room temperature curable fluoropolyether compositions and cured products, as well as articles

Abstract

A room-temperature curable fluoropolyether compound comprising (A) a perfluoropolyether compound having two or more alkenyl groups in one molecule, (B) a fluorinated organic hydrogen polysiloxane compound having two or more hydrogen atoms bonded to silicon atoms in one molecule and having one or more fluorinated organic groups but not containing epoxy or trialkoxy silicon groups, (C) a platinum group metal catalyst, and (D) hydrophobic silica particles with a BET specific surface area of ​​110 m² / g or more, which cures at room temperature, provides excellent light transmittance in the ultraviolet and visible wavelength regions, exhibits good rubber strength, and has a low curing shrinkage rate.

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